diff --git a/include/d3d12.idl b/include/d3d12.idl
index dc5015d8..f70b58ba 100644
--- a/include/d3d12.idl
+++ b/include/d3d12.idl
@@ -141,6 +141,8 @@ typedef enum D3D12_CPU_PAGE_PROPERTY
 typedef enum D3D12_MEMORY_POOL
 {
     D3D12_MEMORY_POOL_UNKNOWN = 0,
+    D3D12_MEMORY_POOL_L0 = 1,
+    D3D12_MEMORY_POOL_L1 = 2,
 } D3D12_MEMORY_POOL;
 
 typedef struct D3D12_HEAP_PROPERTIES
@@ -161,7 +163,6 @@ typedef enum D3D12_HEAP_FLAGS
     D3D12_HEAP_FLAG_SHARED_CROSS_ADAPTER = 0x20,
     D3D12_HEAP_FLAG_DENY_RT_DS_TEXTURES = 0x40,
     D3D12_HEAP_FLAG_DENY_NON_RT_DS_TEXTURES = 0x80,
-
     D3D12_HEAP_FLAG_ALLOW_ALL_BUFFERS_AND_TEXTURES = 0x00,
     D3D12_HEAP_FLAG_ALLOW_ONLY_BUFFERS = 0xc0,
     D3D12_HEAP_FLAG_ALLOW_ONLY_NON_RT_DS_TEXTURES = 0x44,